---
title: "Sean Leahy, Title 5 System Inspector SI #14266 | Title 5 Roster"
description: "Sean Leahy is a MassDEP-approved Title 5 System Inspector (SI #14266) based in Stoughton, MA. Approval expires June 30, 2027 per the NEIWPCC list."
canonical: https://title5roster.com/inspectors/sean-leahy-si14266/
---

# Sean Leahy, Title 5 System Inspector (SI #14266)

Sean Leahy is on the NEIWPCC list of MassDEP-approved Title 5 System Inspectors dated October 2, 2026.

* **SI number:** #14266
* **Approval expires:** June 30, 2027
* **Approved by:** Massachusetts Department of Environmental Protection (MassDEP); list published by NEIWPCC
* **Business listing:** Listed under own name
* **Based in:** Stoughton, MA
* **County:** Norfolk County

Source: https://neiwpcc.org/wp-content/uploads/2026/10/SI-Instate-10.2.2026.pdf (retrieved 2026-10-12)